CN107616142B - Rana nigromaculata static feeding domestication and rice-frog symbiotic breeding method - Google Patents
Rana nigromaculata static feeding domestication and rice-frog symbiotic breeding method Download PDFInfo
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Abstract
A rana nigromaculata feeding domestication and rice-frog symbiotic breeding method comprises the following steps: (1) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net; (2) selecting rana nigromaculata frog seeds; (3) breeding frog seeds; (4) purification, rejuvenation and selection breeding method; (5) training static predation; the invention avoids directly polluting the frog habitat, is beneficial to the healthy growth of the frog, and increases the rice planting area, the frog habitat and the frog putting amount; the method adopts purification, rejuvenation, selection and breeding, and can improve the physiological habit of Rana nigromaculata by selecting improved varieties in each breeding period and long-term domestication (3-5 generations).
Description
Technical Field
The invention relates to the field of aquaculture, in particular to a rana nigromaculata feeding and domesticating and rice and frog symbiotic breeding method.
Background
Rana nigromaculata is commonly called as 'Tianji', is one of common frog species, and is usually emerged in field rice. Meanwhile, the rana nigromaculata swallows a large number of insects, more than 70 insects can be caught in 1 day and night, and the rana nigromaculata is a beneficial animal for killing field pests. The cultivation of rana nigromaculata and the symbiotic cultivation of rice can solve the damage of pests to crops, and is a pollution-free biological method. In the traditional symbiotic cultivation of rice and frogs, a cultivation mode that one (1 m wide) ditch is arranged at intervals of one ridge of field block is generally dug in a paddy field, a bait throwing cloth net is laid on the field block and supported by a support, and rice is planted at intervals of one ditch. The mode restricts the rice planting area and the frog habitat. And because the frogs habit in predation of live food (dynamic food), the feeding cloth net is generally vibrated by physical means and some means for driving the frogs to predate are adopted during breeding, so that the excessive manual entering and exiting of the breeding farm brings higher germ propagation risk, and the difficulty of symbiotic breeding of the rice frogs is higher.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a rana nigromaculata static feeding domestication and rice-frog symbiotic breeding and breeding method, which realizes the physiological habit that the rana nigromaculata is converted from the traditional predation dynamic food into the predation static food, and realizes the increase of the economic benefit of breeding by more than one time.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
a rana nigromaculata feeding domestication and rice-frog symbiotic breeding method comprises the following steps:
(1) and (3) land reclamation of rice frogs: the method comprises the following steps of (1) digging a reclaimed rice field and a rana nigromaculata inhabiting pool, wherein the area ratio of the rice field to the rana nigromaculata inhabiting pool is 6:4, digging a rice field ditch between diagonal lines of the rice field, wherein the ditch is 0.5 m deep and 1.2 m wide, and the rana nigromaculata inhabiting pool extends out of a water ditch to be connected with the rice field ditch so that rana nigromaculata can freely go in and out of the rice field ditch and the rana nigromaculata inhabiting pool;
(2) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net: the bait throwing and distributing net is laid with pull string to make the residual bait spread directly to the water ditch of rice field without polluting the habitat of rana nigromaculata and expand the rice field area.
(3) Selecting rana nigromaculata frog species: selecting rana nigromaculata with strong vitality, active temperament and high spawning and ovulation amount in the current year at the beginning of 10 months in the first year, wherein the ratio of female rana nigromaculata to male rana nigromaculata is 1: 1-1: 1.1, the female rana nigromaculata and the male rana nigromaculata develop well and are then bred in the rana nigromaculata inhabiting pool of the rice field;
(4) breeding frog seeds: the breeding density is 15 per square meter, the number of times of feeding by laying a bait laying net in a paddy field ditch is kept to be 1 day and 3 times, and the grain size of the feed is 5.0 mm;
(5) young frog cultivation: keeping the temperature in the paddy field ditch and the black frog inhabiting pool above 14 ℃, enabling fertilized eggs of the black frog to have a proper incubation environment, ensuring the incubation success rate of the fertilized eggs, putting a feed for the tadpoles after the fertilized eggs are incubated out of the tadpoles, wherein the grain diameter of the feed is 2.0mm, observing the black frog inhabiting pool environment once every 5 days for 3 times every day, and changing water;
(6) purification, rejuvenation and selection breeding method: in the breeding peak period of 4 months each year, the water temperature of the paddy field is kept above 12 degrees, and the rana nigromaculata which is active in sexual condition and good in development is selected for mating and breeding, or the rana nigromaculata is hybridized and bred with the wild rana nigromaculata which is good in development;
(7) training static predation: the rana nigromaculata bred scientifically every year is fed in a mode that bait is directly scattered in a paddy field ditch by laying a bait throwing cloth net, floats on the water surface and is induced to feed, so that the conditional reflex of the rana nigromaculata and nigr;
(8) improving static predation: the domesticated rana nigromaculata is fed for 2 times from 3 times per day, so that rana nigromaculata groups are promoted to form competitive feeding, and the static predation habit of the rana nigromaculata is further improved.
In the scheme, the rana nigromaculata feeding and domesticating and rana nigromaculata symbiotic breeding method comprises the following steps:
(1) and (3) land reclamation of rice frogs: the method comprises the following steps of (1) digging a reclaimed rice field and a rana nigromaculata inhabiting pool, wherein the area ratio of the rice field to the rana nigromaculata inhabiting pool is 6:4, digging a rice field ditch between diagonal lines of the rice field, wherein the ditch is 0.5 m deep and 1.2 m wide, and the rana nigromaculata inhabiting pool extends out of a water ditch to be connected with the rice field ditch so that rana nigromaculata can freely go in and out of the rice field ditch and the rana nigromaculata inhabiting pool;
(2) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net: the bait throwing and distributing net is laid with pull string to make the residual bait spread directly to the water ditch of rice field without polluting the habitat of rana nigromaculata and expand the rice field area.
(3) Selecting rana nigromaculata frog species: selecting rana nigromaculata with strong vitality, active temperament and high spawning and ovulation amount in the current year at the beginning of 10 months in the first year, wherein the ratio of female rana nigromaculata to male rana nigromaculata is 1: 1-1: 1.1, the female rana nigromaculata and the male rana nigromaculata develop well and are then bred in the rana nigromaculata inhabiting pool of the rice field;
(4) breeding frog seeds: the breeding density is 15 per square meter, the number of times of feeding by laying a bait laying net in a paddy field ditch is kept to be 1 day and 3 times, and the grain size of the feed is 5.0 mm;
(5) young frog cultivation: keeping the temperature in the paddy field ditch and the black frog inhabiting pool above 14 ℃, enabling fertilized eggs of the black frog to have a proper incubation environment, ensuring the incubation success rate of the fertilized eggs, putting a feed for the tadpoles after the fertilized eggs are incubated out of the tadpoles, wherein the grain diameter of the feed is 2.0mm, observing the black frog inhabiting pool environment once every 5 days for 3 times every day, and changing water;
(6) purification, rejuvenation and selection breeding method: in the breeding peak period of 4 months each year, the water temperature of the paddy field is kept above 12 degrees, and the rana nigromaculata which is active in sexual condition and good in development is selected for mating and breeding, or the rana nigromaculata is hybridized and bred with the wild rana nigromaculata which is good in development;
(7) training static predation: the rana nigromaculata bred scientifically every year is fed in a mode that bait is directly scattered in a paddy field ditch by laying a bait throwing cloth net, floats on the water surface and is induced to feed, so that the conditional reflex of the rana nigromaculata;
(8) improving static predation: the domesticated rana nigromaculata is fed for 2 times from 3 times per day, so that rana nigromaculata groups are promoted to form competitive feeding, and the static predation habit of the rana nigromaculata is further improved.
In the scheme, the rana nigromaculata feeding and domesticating and rana nigromaculata symbiotic breeding method comprises the following steps:
(1) and (3) land reclamation of rice frogs: the method comprises the following steps of (1) digging a reclaimed rice field and a rana nigromaculata inhabiting pool, wherein the area ratio of the rice field to the rana nigromaculata inhabiting pool is 6:4, digging a rice field ditch between diagonal lines of the rice field, wherein the ditch is 0.5 m deep and 1.2 m wide, and the rana nigromaculata inhabiting pool extends out of a water ditch to be connected with the rice field ditch so that rana nigromaculata can freely go in and out of the rice field ditch and the rana nigromaculata inhabiting pool;
(2) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net: the bait throwing and distributing net is laid with pull string to make the residual bait spread directly to the water ditch of rice field without polluting the habitat of rana nigromaculata and expand the rice field area.
(3) Selecting rana nigromaculata frog species: selecting rana nigromaculata with strong vitality, active temperament and high spawning and ovulation amount in the current year at the beginning of 10 months in the first year, wherein the ratio of female rana nigromaculata to male rana nigromaculata is 1: 1-1: 1.1, the female rana nigromaculata and the male rana nigromaculata develop well and are then bred in the rana nigromaculata inhabiting pool of the rice field;
(4) breeding frog seeds: the breeding density is 15 per square meter, the number of times of feeding by laying a bait laying net in a paddy field ditch is kept to be 1 day and 3 times, and the grain size of the feed is 5.0 mm;
(5) young frog cultivation: keeping the temperature in the paddy field ditch and the black frog inhabiting pool above 14 ℃, enabling fertilized eggs of the black frog to have a proper incubation environment, ensuring the incubation success rate of the fertilized eggs, putting a feed for the tadpoles after the fertilized eggs are incubated out of the tadpoles, wherein the grain diameter of the feed is 2.0mm, observing the black frog inhabiting pool environment once every 5 days for 3 times every day, and changing water;
(6) purification, rejuvenation and selection breeding method: in the breeding peak period of 4 months each year, the water temperature of the paddy field is kept above 12 degrees, and the rana nigromaculata which is active in sexual condition and good in development is selected for mating and breeding, or the rana nigromaculata is hybridized and bred with the wild rana nigromaculata which is good in development;
(7) training static predation: the rana nigromaculata bred scientifically every year is fed in a mode that bait is directly scattered in a paddy field ditch by laying a bait throwing cloth net, floats on the water surface and is induced to feed, so that the conditional reflex of the rana nigromaculata;
(8) improving static predation: the domesticated rana nigromaculata is fed for 2 times from 3 times per day, so that rana nigromaculata groups are promoted to form competitive feeding, and the static predation habit of the rana nigromaculata is further improved.
In the scheme, the rana nigromaculata feeding and domesticating and rana nigromaculata symbiotic breeding method comprises the following steps:
(1) and (3) land reclamation of rice frogs: the method comprises the following steps of (1) digging a reclaimed rice field and a rana nigromaculata inhabiting pool, wherein the area ratio of the rice field to the rana nigromaculata inhabiting pool is 6:4, digging a rice field ditch between diagonal lines of the rice field, wherein the ditch is 0.5 m deep and 1.2 m wide, and the rana nigromaculata inhabiting pool extends out of a water ditch to be connected with the rice field ditch so that rana nigromaculata can freely go in and out of the rice field ditch and the rana nigromaculata inhabiting pool;
(2) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net: the bait throwing and distributing net is laid with pull string to make the residual bait spread directly to the water ditch of rice field without polluting the habitat of rana nigromaculata and expand the rice field area.
(3) Selecting rana nigromaculata frog species: selecting rana nigromaculata with strong vitality, active temperament and high spawning and ovulation amount in the current year at the beginning of 10 months in the first year, wherein the ratio of female rana nigromaculata to male rana nigromaculata is 1: 1-1: 1.1, the female rana nigromaculata and the male rana nigromaculata develop well and are then bred in the rana nigromaculata inhabiting pool of the rice field;
(4) breeding frog seeds: the breeding density is 15 per square meter, the number of times of feeding by laying a bait laying net in a paddy field ditch is kept to be 1 day and 3 times, and the grain size of the feed is 5.0 mm;
(5) young frog cultivation: keeping the temperature in the paddy field ditch and the black frog inhabiting pool above 14 ℃, enabling fertilized eggs of the black frog to have a proper incubation environment, ensuring the incubation success rate of the fertilized eggs, putting a feed for the tadpoles after the fertilized eggs are incubated out of the tadpoles, wherein the grain diameter of the feed is 2.0mm, observing the black frog inhabiting pool environment once every 5 days for 3 times every day, and changing water;
(6) purification, rejuvenation and selection breeding method: in the breeding peak period of 4 months each year, the water temperature of the paddy field is kept above 12 degrees, and the rana nigromaculata which is active in sexual condition and good in development is selected for mating and breeding, or the rana nigromaculata is hybridized and bred with the wild rana nigromaculata which is good in development;
(7) training static predation: the rana nigromaculata bred scientifically every year is fed in a mode that bait is directly scattered in a paddy field ditch by laying a bait throwing cloth net, floats on the water surface and is induced to feed, so that the conditional reflex of the rana nigromaculata;
(8) improving static predation: the domesticated rana nigromaculata is fed for 2 times from 3 times per day, so that rana nigromaculata groups are promoted to form competitive feeding, and the static predation habit of the rana nigromaculata is further improved.
Compared with the prior art, the invention has the advantages that:
1. the invention realizes the physiological habit that the frogs are changed from the traditional predation dynamic food to the predation static food by purifying and rejuvenating, training, planting and breeding modes and breeding and other various technical factors for a long time (3-5 generations), and realizes the increase of planting and breeding economic benefits by more than one time.
2. The domesticated rana nigromaculata is more suitable for symbiotic breeding of rice rana nigromaculata, and the breeding difficulty and the breeding cost of rana nigromaculata is reduced.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by combining the following embodiments.
The embodiment of the invention provides a rana nigromaculata feeding and domesticating and rice-frog symbiotic breeding method, which comprises the following steps:
(1) and (3) land reclamation of rice frogs: the method comprises the following steps of (1) digging a reclaimed rice field and a rana nigromaculata inhabiting pool, wherein the area ratio of the rice field to the rana nigromaculata inhabiting pool is 6:4, digging a rice field ditch between diagonal lines of the rice field, wherein the ditch is 0.5 m deep and 1.2 m wide, and the rana nigromaculata inhabiting pool extends out of a water ditch to be connected with the rice field ditch so that rana nigromaculata can freely go in and out of the rice field ditch and the rana nigromaculata inhabiting pool;
(2) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net: the bait throwing and distributing net is laid with pull string to make the residual bait spread directly to the water ditch of rice field without polluting the habitat of rana nigromaculata and expand the rice field area.
(3) Selecting rana nigromaculata frog species: selecting rana nigromaculata with strong vitality, active temperament and high spawning and ovulation amount in the current year at the beginning of 10 months in the first year, wherein the ratio of female rana nigromaculata to male rana nigromaculata is 1: 1-1: 1.1, the female rana nigromaculata and the male rana nigromaculata develop well and are then bred in the rana nigromaculata inhabiting pool of the rice field;
(4) breeding frog seeds: the breeding density is 15 per square meter, the number of times of feeding by laying a bait laying net in a paddy field ditch is kept to be 1 day and 3 times, and the grain size of the feed is 5.0 mm;
(5) young frog cultivation: keeping the temperature in the paddy field ditch and the black frog inhabiting pool above 14 ℃, enabling fertilized eggs of the black frog to have a proper incubation environment, ensuring the incubation success rate of the fertilized eggs, putting a feed for the tadpoles after the fertilized eggs are incubated out of the tadpoles, wherein the grain diameter of the feed is 2.0mm, observing the black frog inhabiting pool environment once every 5 days for 3 times every day, and changing water;
(6) purification, rejuvenation and selection breeding method: in the breeding period of rana nigromaculata in 3-6 months per year, especially in the breeding peak period of 4 months, the water temperature for irrigating the rice field is kept above 12 ℃, and rana nigromaculata which is active in sexual condition and good in development is selected from the water temperature for mating and breeding, or rana nigromaculata which is good in development is bred with wild rana nigromaculata seeds in hybridization;
(7) training static predation: the method comprises the following steps of (1) feeding the rana nigromaculata through laying a bait throwing cloth net in a scientific cultivation and optimization mode every year, wherein baits directly scatter to a paddy field ditch, float on the water surface and are induced to feed the rana nigromaculata, so that the conditional reflex of the rana nigromaculata on the baits and other foods is trained, a static predation habit is formed by a traditional dynamic predation habit, and the domestication time is 3-5 generations;
(8) improving static predation: the domesticated rana nigromaculata is fed for 2 times from 3 times per day, so that rana nigromaculata groups are promoted to form competitive feeding, and the static predation habit of the rana nigromaculata is further improved.
Example 1:
the embodiment of the invention provides a rana nigromaculata feeding and domesticating and rice-rana nigromaculata symbiotic breeding method, which comprises the following steps:
(1) and (3) land reclamation of rice frogs: the method comprises the following steps of (1) digging a reclaimed rice field and a rana nigromaculata inhabiting pool, wherein the area ratio of the rice field to the rana nigromaculata inhabiting pool is 6:4, digging a rice field ditch between diagonal lines of the rice field, wherein the ditch is 0.5 m deep and 1.2 m wide, and the rana nigromaculata inhabiting pool extends out of a water ditch to be connected with the rice field ditch so that rana nigromaculata can freely go in and out of the rice field ditch and the rana nigromaculata inhabiting pool;
(2) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net: the bait throwing and distributing net is laid with pull string to make the residual bait spread directly to the water ditch of rice field without polluting the habitat of rana nigromaculata and expand the rice field area.
(3) Selecting rana nigromaculata frog species: selecting rana nigromaculata with strong vitality, active temperament and high spawning and ovulation amount in the current year at the beginning of 10 months in the first year, wherein the ratio of female rana nigromaculata to male rana nigromaculata is 1: 1-1: 1.1, the female rana nigromaculata and the male rana nigromaculata develop well and are then bred in the rana nigromaculata inhabiting pool of the rice field;
(4) breeding frog seeds: the breeding density is 15 per square meter, the number of times of feeding by laying a bait laying net in a paddy field ditch is kept to be 1 day and 3 times, and the grain size of the feed is 5.0 mm;
(5) young frog cultivation: keeping the temperature in the paddy field ditch and the black frog inhabiting pool above 14 ℃, enabling fertilized eggs of the black frog to have a proper incubation environment, ensuring the incubation success rate of the fertilized eggs, putting a feed for the tadpoles after the fertilized eggs are incubated out of the tadpoles, wherein the grain diameter of the feed is 2.0mm, observing the black frog inhabiting pool environment once every 5 days for 3 times every day, and changing water;
(6) purification, rejuvenation and selection breeding method: in the breeding period of rana nigromaculata in 3-6 months per year, especially in the breeding peak period of 4 months, the water temperature for irrigating the rice field is kept above 12 ℃, and rana nigromaculata which is active in sexual condition and good in development is selected from the water temperature for mating and breeding, or rana nigromaculata which is good in development is bred with wild rana nigromaculata seeds in hybridization;
(7) training static predation: the method comprises the following steps of (1) feeding the rana nigromaculata through laying a bait throwing cloth net in a mode that baits are directly scattered in a paddy field ditch and float on the water surface to induce the rana nigromaculata to feed, so that the conditioned reflex of the rana nigromaculata on the baits and other foods is trained, a static predation habit is formed by a traditional dynamic predation habit, and the domestication time is 3 generations;
(8) improving static predation: the domesticated rana nigromaculata is fed for 2 times from 3 times per day, so that rana nigromaculata groups are promoted to form competitive feeding, and the static predation habit of the rana nigromaculata is further improved.
Example 2:
the embodiment of the invention provides a rana nigromaculata feeding and domesticating and rice-frog symbiotic breeding method, which comprises the following steps:
(1) and (3) land reclamation of rice frogs: the method comprises the following steps of (1) digging a reclaimed rice field and a rana nigromaculata inhabiting pool, wherein the area ratio of the rice field to the rana nigromaculata inhabiting pool is 6:4, digging a rice field ditch between diagonal lines of the rice field, wherein the ditch is 0.5 m deep and 1.2 m wide, and the rana nigromaculata inhabiting pool extends out of a water ditch to be connected with the rice field ditch so that rana nigromaculata can freely go in and out of the rice field ditch and the rana nigromaculata inhabiting pool;
(2) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net: the bait throwing and distributing net is laid with pull string to make the residual bait spread directly to the water ditch of rice field without polluting the habitat of rana nigromaculata and expand the rice field area.
(3) Selecting rana nigromaculata frog species: selecting rana nigromaculata with strong vitality, active temperament and high spawning and ovulation amount in the current year at the beginning of 10 months in the first year, wherein the ratio of female rana nigromaculata to male rana nigromaculata is 1: 1-1: 1.1, the female rana nigromaculata and the male rana nigromaculata develop well and are then bred in the rana nigromaculata inhabiting pool of the rice field;
(4) breeding frog seeds: the breeding density is 15 per square meter, the number of times of feeding by laying a bait laying net in a paddy field ditch is kept to be 1 day and 3 times, and the grain size of the feed is 5.0 mm;
(5) young frog cultivation: keeping the temperature in the paddy field ditch and the black frog inhabiting pool above 14 ℃, enabling fertilized eggs of the black frog to have a proper incubation environment, ensuring the incubation success rate of the fertilized eggs, putting a feed for the tadpoles after the fertilized eggs are incubated out of the tadpoles, wherein the grain diameter of the feed is 2.0mm, observing the black frog inhabiting pool environment once every 5 days for 3 times every day, and changing water;
(6) purification, rejuvenation and selection breeding method: in the breeding period of rana nigromaculata in 3-6 months per year, especially in the breeding peak period of 4 months, the water temperature for irrigating the rice field is kept above 12 ℃, and rana nigromaculata which is active in sexual condition and good in development is selected from the water temperature for mating and breeding, or rana nigromaculata which is good in development is bred with wild rana nigromaculata seeds in hybridization;
(7) training static predation: the method comprises the following steps of (1) feeding the rana nigromaculata through laying a bait throwing cloth net in a mode that baits are directly scattered in a paddy field ditch and float on the water surface to induce the rana nigromaculata to feed, so that the conditioned reflex of the rana nigromaculata on the baits and other foods is trained, a static predation habit is formed by a traditional dynamic predation habit, and the domestication time is 5 generations;
(8) improving static predation: the domesticated rana nigromaculata is fed for 2 times from 3 times per day, so that rana nigromaculata groups are promoted to form competitive feeding, and the static predation habit of the rana nigromaculata is further improved.
Example 3:
(1) and (3) land reclamation of rice frogs: the method comprises the following steps of (1) digging a reclaimed rice field and a rana nigromaculata inhabiting pool, wherein the area ratio of the rice field to the rana nigromaculata inhabiting pool is 6:4, digging a rice field ditch between diagonal lines of the rice field, wherein the ditch is 0.5 m deep and 1.2 m wide, and the rana nigromaculata inhabiting pool extends out of a water ditch to be connected with the rice field ditch so that rana nigromaculata can freely go in and out of the rice field ditch and the rana nigromaculata inhabiting pool;
(2) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net: the bait throwing and distributing net is laid with pull string to make the residual bait spread directly to the water ditch of rice field without polluting the habitat of rana nigromaculata and expand the rice field area.
(3) Selecting rana nigromaculata frog species: selecting rana nigromaculata with strong vitality, active temperament and high spawning and ovulation amount in the current year at the beginning of 10 months in the first year, wherein the ratio of female rana nigromaculata to male rana nigromaculata is 1: 1-1: 1.1, the female rana nigromaculata and the male rana nigromaculata develop well and are then bred in the rana nigromaculata inhabiting pool of the rice field;
(4) breeding frog seeds: the breeding density is 15 per square meter, the number of times of feeding by laying a bait laying net in a paddy field ditch is kept to be 1 day and 3 times, and the grain size of the feed is 5.0 mm;
(5) young frog cultivation: keeping the temperature in the paddy field ditch and the black frog inhabiting pool above 14 ℃, enabling fertilized eggs of the black frog to have a proper incubation environment, ensuring the incubation success rate of the fertilized eggs, putting a feed for the tadpoles after the fertilized eggs are incubated out of the tadpoles, wherein the grain diameter of the feed is 2.0mm, observing the black frog inhabiting pool environment once every 5 days for 3 times every day, and changing water;
(6) purification, rejuvenation and selection breeding method: in the breeding period of rana nigromaculata in 3-6 months per year, especially in the breeding peak period of 4 months, the water temperature for irrigating the rice field is kept above 12 ℃, and rana nigromaculata which is active in sexual condition and good in development is selected from the water temperature for mating and breeding, or rana nigromaculata which is good in development is bred with wild rana nigromaculata seeds in hybridization;
(7) training static predation: the method comprises the following steps of (1) feeding the rana nigromaculata through laying a bait throwing cloth net in a mode that baits are directly scattered in a paddy field ditch and float on the water surface to induce the rana nigromaculata to feed, so that the conditioned reflex of the rana nigromaculata on the baits and other foods is trained, a static predation habit is formed by a traditional dynamic predation habit, and the domestication time is 4 generations;
(8) improving static predation: the domesticated rana nigromaculata is fed for 2 times from 3 times per day, so that rana nigromaculata groups are promoted to form competitive feeding, and the static predation habit of the rana nigromaculata is further improved.
Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims (4)
1. A rana nigromaculata feeding domestication and rice-rana nigromaculata symbiotic breeding method is characterized by comprising the following steps:
(1) and (3) land reclamation of rice frogs: the method comprises the following steps of (1) digging a reclaimed rice field and a rana nigromaculata inhabiting pool, wherein the area ratio of the rice field to the rana nigromaculata inhabiting pool is 6:4, digging a rice field ditch between diagonal lines of the rice field, wherein the ditch is 0.5 m deep and 1.2 m wide, and the rana nigromaculata inhabiting pool extends out of a water ditch to be connected with the rice field ditch so that rana nigromaculata can freely go in and out of the rice field ditch and the rana nigromaculata inhabiting pool;
(2) the upper layer of the paddy field ditch adopts a laying bait-throwing cloth net: the bait throwing and distributing net is laid by adopting a pull wire, so that residual bait is directly scattered to a paddy field ditch, the habitat of rana nigromaculata is not polluted, and the planting area of the paddy field is enlarged;
(3) selecting rana nigromaculata frog species: selecting rana nigromaculata with strong vitality, active temperament and high spawning and ovulation amount in the current year at the beginning of 10 months in the first year, wherein the ratio of female rana nigromaculata to male rana nigromaculata is 1: 1-1: 1.1, the female rana nigromaculata and the male rana nigromaculata develop well and are then bred in the rana nigromaculata inhabiting pool of the rice field;
(4) breeding frog seeds: the breeding density is 15 per square meter, the number of times of feeding by laying a bait laying net in a paddy field ditch is kept to be 1 day and 3 times, and the grain size of the feed is 5.0 mm;
(5) young frog cultivation: keeping the temperature in the paddy field ditch and the black frog inhabiting pool above 14 ℃, enabling fertilized eggs of the black frog to have a proper incubation environment, ensuring the incubation success rate of the fertilized eggs, putting a feed for the tadpoles after the fertilized eggs are incubated out of the tadpoles, wherein the grain diameter of the feed is 2.0mm, observing the black frog inhabiting pool environment once every 5 days for 3 times every day, and changing water;
(6) purification, rejuvenation and selection breeding method: in the breeding peak period of 4 months each year, the water temperature of the paddy field is kept above 12 degrees, and the rana nigromaculata which is active in sexual condition and good in development is selected for mating and breeding, or the rana nigromaculata is hybridized and bred with the wild rana nigromaculata which is good in development;
(7) training static predation: the rana nigromaculata bred scientifically every year is fed in a mode that bait is directly scattered in a paddy field ditch by laying a bait throwing cloth net, floats on the water surface and is induced to feed, so that the conditional reflex of the rana nigromaculata and nigr;
(8) improving static predation: the domesticated rana nigromaculata is fed for 2 times from 3 times per day, so that rana nigromaculata groups are promoted to form competitive feeding, and the static predation habit of the rana nigromaculata is further improved.
2. The method as claimed in claim 1, wherein the acclimatization time in the training static predation is 3 generations.
3. The method as claimed in claim 1, wherein the acclimatization time in the training static predation is 4 generations.
4. The method as claimed in claim 1, wherein the acclimatization time in the training static predation is 5 generations.
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